Global Change Master Directory gsfc-gcmduso@mail.nasa.gov 50 2013-05-24T06:58:48Z http://mddemo.gsfc.nasa.gov/KeywordSearch/OpenSearch.do 139 0 http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Steig_0963924 30.0,-90.0,30.0,-60.0 2013-05-10T04:00:00Z

Ice cores and surface snow samples were collected from in overland traverses in East Antarctica: one from the Norwegian Troll Station to the United States South Pole Station in 2007-2008; and a return ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]bay_0738658 112.08639,-79.4675,112.08639,-79.4675 2013-05-07T04:00:00Z

Preliminary data from an optical log made at WAIS Divide with the laser dust logger in December 2011, in the clear ice at depths between 1403.58 m and 3329.8 m. The Dust Logger measures the amount ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]US_ITASE-99-1 -122.63,-80.62,-122.63,-80.62 1713-01-01T00:00:00Z 2000-12-31T00:00:00Z 2013-01-24T05:00:00Z

Sub-annually resolved ice core chemistry data from various sites on the Antarctic Ice Sheet were obtained from 1999 to 2008 during the US International Trans-Antarctic Scientific Expedition (US ITASE) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]steffen_0732946 2009-01-01T00:00:00Z 2011-10-01T00:00:00Z 2013-01-07T05:00:00Z

Our ground penetrating radar surveys focused on key structural features of the ice shelf, including basal crevasses, marine ice and rifts. Here we present our published work on basal crevasses. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]cuffey_0537661 -112.08,-79.47,-112.08,-79.47 2012-11-13T05:00:00Z

This award supports analyses of stable isotopes of water, dD, d18O and deuterium excess in the proposed West Antarctic Ice Sheet Divide (WAIS) deep ice core. The project will analyze a continuous ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]hatcher_0739684 2012-10-25T04:00:00Z

This award supports a project to fully develop the analytical protocols needed to exploit a relatively new technique for the analysis of soluble organic matter in ice core samples. The technique couples ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]baker_0738975 2009-09-01T00:00:00Z 2011-03-01T00:00:00Z 2009-01-01T00:00:00Z 2009-06-01T00:00:00Z 2006-06-01T00:00:00Z 2009-01-01T00:00:00Z 2010-02-01T00:00:00Z 2010-03-01T00:00:00Z 2008-01-01T00:00:00Z 2009-06-01T00:00:00Z 2009-07-01T00:00:00Z 2011-12-31T00:00:00Z 2012-09-21T04:00:00Z

This award supports a project to use advanced microscopic and spectroscopic techniques to explore critical questions about microstructure in ice cores, in particular the microstructural locations ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]pettit_0940650 -165.0,-85.0,-105.0,-75.0 2012-09-12T04:00:00Z

This award supports a project to constrain the accumulation rate, thickness, and temperature history for Siple Dome using a vertical velocity profile that includes the effects of an evolving fabric ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]waddington_0636997 2012-09-06T04:00:00Z

We provide a the synthetic, sparse depth-age data generated using a 1-d ice-flow model. The age data include red noise to simulate real depth-age data. The inferred depth-age data profile are included. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]alley_0539578 112.1166,-79.4666,112.1166,-79.4666 2012-08-22T04:00:00Z

This award supports a five-year collaborative project to study the physical-properties of the planned deep ice core and the temperature of the ice in the divide region of the West Antarctic Ice Sheet. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]dunbar_0636767 112.11666,-79.46666,112.11666,-79.46666 2007-07-01T00:00:00Z 2012-06-30T00:00:00Z 2012-08-01T04:00:00Z

Visible tephra layers were found in the Byrd Station ice core, the first deep core drilled in Antarctica. Since then, tephra have been found in many other Antarctic ice cores. Tephra layers in ice ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]taylor_0440819 112.1,-79.46667,112.1,-79.46667 2012-07-12T04:00:00Z

This award supports a project that is part of the West Antarctic Ice Sheet Divide (WAIS Divide) program; which is a multi-disciplinary multi-institutional program to investigate the causes of natural ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]bay_0739743 123.35,-75.1,123.35,-75.1 2012-06-29T04:00:00Z

This award supports a project to make high-resolution logs of dust and ash in the Dome C borehole using an optical dust logger. The dust logger employs a temperature-regulated diode laser at 404 nm ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]das_0632031 2012-06-22T04:00:00Z

This award supports a project to gather data to better understand the mass balance of the West Antarctic Ice Sheet focusing on the Pine Island and Thwaites Glaciers along the Amundsen Sea coast. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]saltzman_0636953 119.51667,-80.01667,119.51667,-80.01667106.8,-72.46667,106.8,-72.46667148.8,-81.664,148.8,-81.664158.0,-74.666,158.0,-74.666 2012-06-19T04:00:00Z

This award supports a project to measure methyl chloride, methyl bromide, and carbonyl sulfide in air extracted from Antarctic ice cores.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]scambos_0732921 63.0,-65.0,59.0,-60.0 2008-05-01T00:00:00Z 2013-04-30T00:00:00Z 2012-06-18T04:00:00Z

This award supports the cryospheric and oceano-graphic components of an integrated multi-disciplinary program to address these rapid and fundamental changes now taking place in Antarctic Peninsula ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]brook_0739766 -112.08,-79.47,-112.08,-79.47 2007-03-01T00:00:00Z 2010-02-25T00:00:00Z 2012-05-31T04:00:00Z

These data are a decadally resolved record of atmospheric CO2 concentration for the last 1000 years, obtained from the West Antarctic Ice Sheet (WAIS) Divide shallow ice core.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0502 -180.0,-90.0,180.0,-90.0 2008-12-01T00:00:00Z 2009-01-31T00:00:00Z 2012-05-15T04:00:00Z

This data set contains depth profiles for delta carbon-13 (δ13C) and delta deuterium (δD) of methane (CH/4) in South Pole firn air. The investigators obtained air samples from two boreholes ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0436 -119.51667,-80.01667,-119.51667,-80.01667106.8,-72.46667,106.8,-72.46667-38.466667,72.583336,-38.466667,72.583336 1999-01-01T00:00:00Z 2005-12-30T00:00:00Z 2012-05-15T04:00:00Z

This data set contains measurements of impurities and ions in three polar ice cores: the Vostok 5G ice core and the Byrd ice core from Antarctica, and the Greenland Ice Sheet Project 2 (GISP2) D core. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS176 -157.1417,70.9055,-155.5473,72.2153 2002-04-01T00:00:00Z 2005-04-30T00:00:00Z 2012-05-15T04:00:00Z

These data are from a study of the origin and associated geomorphological, ecological, and pedological processes of thaw-lake basins of the Arctic Coastal Plain, Alaska. The research utilized high-resolution ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0215 0.0,-90.0,0.0,-90.0 2012-05-15T04:00:00Z

This data set contains concentrations of soluble chemical species (ions) within a 120 m ice core retrieved at the South Pole station in 2001. The ice core was dated with annual resolution using annual ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0201 -148.8,-81.7,-148.8,-81.7 2002-09-01T00:00:00Z 2003-11-30T00:00:00Z 2012-05-14T04:00:00Z

This data set is a continuous, high-resolution record of biogenic sulfur (methanesulfonate, known as MSA and CH3SO3-) in the 1000 m deep Siple Dome A (SDMA) core, covering 100,000 to 20 years BP. ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0310 -148.3023,-81.403,-148.3023,-81.403 1995-01-01T00:00:00Z 1995-01-31T00:00:00Z 2001-01-01T00:00:00Z 2001-01-31T00:00:00Z 2012-05-14T04:00:00Z

This data set includes records of the delta carbon-13 (?13C) of methane (CH4) in firn air from the South Pole and trapped in bubbles in a short ice core from Siple Dome, Antarctica. Using two firn ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0412 112.09,-79.47,112.09,-79.47 2006-11-01T00:00:00Z 2007-02-01T00:00:00Z 2012-05-14T04:00:00Z

This data set contains trace gas measurements of air extracted from ice core samples from the West Antarctic Ice Sheet Divide A core (WAIS-D 05A). The WAIS A core was dry-drilled at the WAIS site ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0493 112.09,-79.47,112.09,-79.47 2012-05-14T04:00:00Z

This data set provides a high-precision and high-resolution record of atmospheric methane from the West Antarctic Ice Sheet (WAIS) Divide ice core WDC05A, spanning the years 1000 to 1800 C.E. The ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0435 112.09,-79.47,112.09,-79.47 2008-01-01T00:00:00Z 2008-12-30T00:00:00Z 2012-05-14T04:00:00Z

This data set includes methane (CH4) isotope data from the West Antarctic Ice Sheet (WAIS) Divide ice core, WDC05A, in Antarctica. The data include depth, gas age, and the isotopic composition of ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0440 -148.81,-81.65,-148.81,-81.65-38.466667,73.583336,-38.466667,73.583336 2007-01-01T00:00:00Z 2009-12-31T00:00:00Z 2012-05-14T04:00:00Z

This data set contains methane measurements made in trapped air in the Holocene sections of two ice cores: the Siple Dome ice core in Antarctica, and the Greenland Ice Sheet Project 2 (GISP2) ice ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0499 -112.08833,-79.48278,-112.08833,-79.48278112.08833,-79.48278,112.08833,-79.48278 2006-01-01T00:00:00Z 2006-12-31T00:00:00Z 2012-05-14T04:00:00Z

This data set includes microparticle concentration, electrical conductivity, and density measurements from the West Antarctic Ice Sheet (WAIS) Divide deep ice core, WDC06A. Microparticle concentration ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0479 -114.21667,-78.916664,-114.21667,-78.916664 2005-01-01T00:00:00Z 2005-12-31T00:00:00Z 2012-05-14T04:00:00Z

This data set contains measurements of multiple sulfur and oxygen isotopes from sulfates, from an ice core drilled at the West Antarctic Ice Sheet (WAIS) Divide site in 2005. The initial sulfate measurements, ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0311 -106.8,-72.4667,-106.8,-72.4667 2003-09-01T00:00:00Z 2006-06-30T00:00:00Z 2012-05-14T04:00:00Z

This data set includes a time scale for the Vostok ice core, retrieved from Vostok Station on the East Antarctic Plateau. This chronology is derived by orbitally tuning to molecular oxygen to nitrogen ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0273 -148.79,-90.0,0.0,-76.0968 1999-01-01T00:00:00Z 2001-12-31T00:00:00Z 2012-05-14T04:00:00Z

Sub-annually resolved ice core chemistry data from various sites on the Antarctic Ice Sheet were obtained from 1999 to 2008 during the US International Trans-Antarctic Scientific Expedition (US ITASE) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0375 -112.083336,-79.46667,-112.083336,-79.46667 2006-01-01T00:00:00Z 2007-12-30T00:00:00Z 2012-05-14T04:00:00Z

This data set is comprised of optical images of ice core sections, acquired with a digital line-scan camera in the cold room facility at the U.S. National Ice Core Laboratory (NICL). Ice core sections ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]G02201 -180.0,-90.0,180.0,90.0 1882-01-01T00:00:00Z 2007-12-31T00:00:00Z 2012-05-13T04:00:00Z

The International Polar Year Historical Data and Literature collection (formerly known as the Discovery and Access of Historic Literature from the IPYs (DAHLI) project) is an online data collection ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0407 -119.53333,-80.01667,-119.53333,-80.01667 2005-01-01T00:00:00Z 2008-12-31T00:00:00Z 2012-05-13T04:00:00Z

This data set consists of Gas-isotopic data from the Siple Dome and and Greenland Ice Sheet Project 2 (GISP2) ice cores covering roughly the last 100,000 years (100 ka), consisting of d15N (15N/14N) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS113 -38.5,72.58361,-38.5,72.58361 1752-01-01T00:00:00Z 1988-12-31T00:00:00Z 2012-05-11T04:00:00Z

These data were collected for a research project that utilized the Greenland Ice Sheet Project 2 (GISP2) ice core. The project sought evidence of an 11-year sunspot cycle and whether the cycle correlated ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS137 -38.0,72.0,-38.0,72.0 1995-08-01T00:00:00Z 1995-09-30T00:00:00Z 2012-05-11T04:00:00Z

The data compiled here consist of GISP2 deuterium, deuterium excess, and oxygen isotope values measured at the Stable Isotope Laboratory, Institute of Arctic and Alpine Research (INSTAAR), University ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS117 -149.67,68.48,-149.02,68.74 1976-06-01T00:00:00Z 2001-08-31T00:00:00Z 2012-05-11T04:00:00Z

This data set consists of a digital glacial geology map of the Toolik and upper Kuparuk River region, Alaska, USA. The map covers a 740 km² area on Alaska's North Slope, in the northern foothills ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS123 -72.0,60.0,-18.0,85.0 1952-08-17T00:00:00Z 1955-08-20T00:00:00Z 2012-05-11T04:00:00Z

Carl S. Benson's Greenland snow accumulation study field notebooks and analyses of snow accumulation, temperature, ice sheet facies and snow densification are available on 74 microfiche or as hard ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS008 -38.0,72.0,-37.0,72.0 1989-01-01T00:00:00Z 1994-12-31T00:00:00Z 2012-05-11T04:00:00Z

From 1989 to 1994, the U.S. and European scientific communities supported a bold undertaking to acquire an extensive paleoclimate record for the Northern Hemisphere. These efforts, termed the Greenland ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS069 2012-05-11T04:00:00Z

'Into the Arctic' contains educational materials about climate and climate history in the Arctic that use real data and questions from the Greenland Ice Sheet Project Two (GISP2). Beginning in 1993, ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS089 -157.1418,70.9055,-155.5474,71.3136 2000-08-01T00:00:00Z 2001-12-31T00:00:00Z 2012-05-11T04:00:00Z

This data set contains measurements taken from 78 drained thaw-lake basins on the Arctic Coastal Plain between Barrow and Atqasuk, Alaska. Investigators collected and analyzed sediment cores to determine ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]ARCSS136 -156.4,71.066666,-156.4,71.066666 2002-04-15T00:00:00Z 2003-08-15T00:00:00Z 2012-05-11T04:00:00Z

This data set consists of pollen data and radiocarbon (¹⁴C) dates resulting from microscopic analysis and mass spectrometry of soil cores taken from the Peterson Erosional Remnant, located ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]severinghaus_08-39031 2012-05-09T04:00:00Z

This data was collected under the award NSF-ANT08-39031, "Collaborative Research: A "horizontal ice core" for large-volume samples of the past atmosphere, Taylor Glacier, Antarctica". The data consists ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]mcconnell_0538416 -1.6,-82.8,54.9,-73.7 0000-01-01T00:00:00Z 2009-01-01T00:00:00Z 2012-04-25T04:00:00Z

Continuous, high-depth-resolution glacio-chemical measurements in ice core from the Norwegian-U.S. Scientific Traverse of East Antarctica. The traverse traveled from the Norwegian Troll Station near ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]hamilton_0440792 0.0,-90.0,166.67,-77.85 2011-12-01T05:00:00Z

This award supports a series of field measurements that will improve our understanding of the East Antarctic ice sheet. The objectives of this project are to take advantage of the overland traverse ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]winckler_0636898 2011-12-01T05:00:00Z

This award supports a project to study dust sources in Antarctic ice cores. Atmospheric aerosols play an important role both in global biogeochemical cycles as well as in the climate system of the ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]NSIDC-0509 112.09,-79.47,112.09,-79.47 2011-11-22T05:00:00Z

A high-resolution (every 50 yr) methane data set that will play a pivotal role in developing the timescale for the new deep ice core being drilled at the West Antarctic Ice Sheet Divide (WAIS Divde) ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]Sowers_0538538 1888-01-01T00:00:00Z T00:00:00Z 2011-11-09T05:00:00Z

This award supports a project to develop a high-resolution (every 50 yr) methane data set.

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]reusch_1066348 2011-09-30T04:00:00Z

This award supports a three-year effort to use nonlinear techniques to improve understanding of Antarctic climate through studies of observational and forecast model data sets; improve and extend ...

http://gcmd.gsfc.nasa.gov/getdif.htm?[GCMD]kreutz_0636740 112.083336,-79.46667,112.083336,-79.46667 0000-01-01T00:00:00Z 2006-01-01T00:00:00Z 2011-09-19T04:00:00Z

This award supports a project to perform continuous microparticle concentration and size distribution measurements (using coulter counter and state-of-the-art laser detector methods), analysis of ...